| Fighter | Record | Last Bout |
|---|---|---|
| Mantas Kondratavicius | 9-1-0 | 2026-03-21 |
| Nick Klein | 6-3-0 | 2026-10-31 |
| Nikita Krylov | 31-12-0 | 2026-10-24 |
| Rizvan Kuniev | 14-3-1 (1 NC) | 2026-10-24 |
| Roman Kopylov | 15-5-0 | 2026-10-03 |
| Ryan Kuse | 9-3-0 | 2026-08-22 |
| Sangwook Kim | 13-4-0 | 2026-01-31 |
| Sean King III | 6-0-0 | 2026-09-12 |
| Seokhyeon Ko | 13-3-0 | 2026-07-18 |
| Song Kenan | 22-9-0 | 2024-11-23 |
| Steven Koslow | 6-1-0 | 2026-10-17 |
| Toshiomi Kazama | 11-5-0 | 2025-08-09 |
| Zhu Kangjie | 21-5-0 (1 NC) | 2026-05-30 |